For the dome light and lights on reminder not working, check the door switch. If the switch has bad contact, it would not turn the dome light on which would not turn on the chime. Try wiggling the switch and see if the chime comes on.
As to the horn it could be intermittent contact at the horn pads. If the SRS (air-bag) indicator light is showing, it could be a failing cable reel under the steering wheel. Sometimes it could be the horns that are failing which could result in intermittent operations.
Saturday, October 27th, 2012 AT 4:07 PM